Thread-cutting temple.



E. S. STiMPSON.

THREAD CUTTING TEMPLE.

APPLICATION FILED MN 5. I9l6.

1214,35, Patented Jan. 30,1917.

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snares EDVJ'ARD S. STIMPSON, OF HOPEDALE, 1VIA$SAOHUSETTS, ASSIGNOE, BY MESNE ASSIGN- MENTS, T O DBAPEB CORPORATION, OF HOPEDALE, MASSAOHUSETT$, A OOBPORA- TION OF MAINE.

THREAD-CUTTING TEMPLE.

1/ '0 all whom it may concern:

Be it known that I, EDWARD S. STIMPSON, a citizen of the United States, residing at Hopedale, county of lVorcester, State of Massachusetts, have invented an Improvement in ilThrcad-Cutting Temples, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to automatic weft replenishing looms wherein the filling is replenished upon failure or more or less partial exhaustion of the filling supply in the shuttle, and has particularly to do with the so-called temple thread cutter, a familiar device in this character of loom having as its function the severance of the loose end of filling extending from the selvage after replenishment has taken place.

The temple thread cutter which is usually operated by the lay is generally operated at each beatup, thus resulting in unnecessary wear and tear of the parts. A number of inventions have been made having as their object to secure the operation of the temple thread, cutter only when needed, that is, for a brief period immediately after replenishment has take place. Among these may be noted the invention set forth in the patents to Joy No. 630,236 granted August 1, 1899, to myself lilo. 70-l,715 granted July 15, 1902, and to Gerrard No. 1,128,440 granted February 16, 1915.

It is the object of the present invention to secure this same end by a simple, efficient and practical. form of mechanism which shall reduce the number of working parts as much as possible and present a mechanism which shall be not liable to get out of order or to become broken notwithstanding the severe conditions of shock and ar to which such mechanism is necessarily subject in the operation of the loom.

These and other objects of the invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the appended claims.

The drawings show a preferred form of the invention in connection with a temple thread cutter of a well known commercial type such as is illustrated in my Patent No. 765,687 granted July 26, 1904.

Specification of Letters Patent.

Patented Jan. 3 9, 191%.

Serial No. 70,331.

In the draudngs, Figure-1 is a side elevation of a preferred form of the invention as applied to a loom equipped with a temple thread cutter of the type shown in my aforesaid last mentioned patent with the breast beam of the loom and the controller rock shaft in vertical cross section, and the lay in dotted lines with the temple thread cutter out of actuating position; Fig. 2 is a view similar to Fig. 1 with the cutter shown in actuating position; Fig. 3 is a top plan view of a portion of the mechanism shown in the otl er figures.

It is unnecessary to describe the construction or operation of the weft replenishing loom to which the temple thread cutter is an adjunct as both are well known and familiar and are furthermore briefly described in my before mentioned Patent F0. 70%,715. N or for similar reasons is it necessary to describe in detail the position and general function of the temple and temple thread cutter as that is also fully disclosed in my aforesaid Patent No. 7 65,687 It is sunicient to note that the temple stand 1 is of the usual construction longitudinally adjustably secured by means of the slot 2 to a bracket 3 which in turn is secured in lateral adjustment to a block 4: rigid or integral with the breast beam 5 of the loom. This temple stand carries slidingly mounted thereon the slide bar or shank 6 which at its rearward end carries the usual pod and toothed roll which form no part of the present invention.

The thread cutting mechanism as in my aforesaid Patent No. 765,687 is carried at the side and end of the shank 6 and comprises a. fixed blade and a movable blade 7 cotiperating therewith, and between which the thread end is severed upon the operation of the movable blade. This movable blade 7 slides longitudinally and rocks vertically in the head 8 of the temple shank 6. At its forward end it is provided with the stop lug 9 and a shoe 10 the former of which limits its rearward movement and the latter of which slides and rocks upon the ear 11, forming a part of the head of the temple. A wire spring 12 coiled about a stud 13 on the blade 7 and about a stud 14: on the temple shank and having its upper end 15 abutting a rigid part of the shank normally acts to project rearwardly and to elevate the rearward end of the blade 7. The blade 7 is also provided with a heel 16 projecting downwardly into the path of the lay and the temple shank 6 is itself provided with a similar downwardly projecting heel'17.

The operation of these parts is well known and familiar. As the lay 18 beats up it first strikes the heel 16 of the movable blade of the thread cutter causing the hooked rearward end to move downwardly and forwardly against the action of the spring 12 into cooperation with the fixed cutting blade and thus to sever any filling extending into the field of operation of the cutting blades. As the lay continues its forward movement it contacts with the heel 17 of the temple and carries the temple with the thread cutter forwardly. This operation takes place at each beat up. But as will ;be understood the operation of the thread cutter is only needed after filling replenishment has takenplace when a filling end is left extending from the selvage and is to be cut off. In such a filling end were invariably placed within the field of operation of the thread cutter but one operation of the thread cutter would be necesto secure this result are illustrated in their preferred form in the drawings. A stud or projection 19 is formed on or secured to the forward end of themovable blade 7. A latch. 20 is pivotally mounted at 21 to the rearward end of the temple head at one side. This latch is normally depressed by a helical spring 22 into engagement with a projection23 from the temple head. This latch at its forward end extends upwardly and is provided with alaterally projecting stud 24. VVhen the thread cutter is out of actuating position the movable blade 7 is in its forward position with its rearward end moved downwardly so that'the rearward ihooked cutting end is withdrawn in the temple head as shown in Fig. 1. WVhen in this position the latch 20 if moved downwardly under the action of the spring 22 passes behind the stud 19 :and holds the blade-7 in this position against the action of the spring 12. When in this positionthe heel 16 of the blade 7 is for-ward of or in line with the heel:17 of'the templeso that the thread cutter will not be actuated by the lay upon the beat up. This is the position of the parts during the normal operation of the loom and is as shown in Fig. 1.

A latch controller shown as a bar or plate 25 is mounted on the temple stand to slide longitudinally thereof and to move normally under the influence of gravity in a rearward direction so that it tends to assume the position shown in Fig. 1. This plate 25 is slotted at 26 rests against ribs 27 projecting from the sides of the temple stand, and is guided'by the projections 28 from the said ribs passing-through the slot 26. Adjustable means are provided for frictionally retarding the movement of this latch controller and thesemeans are herein illustrated as leaf springs 29 slipped over the projections 28 and held against the latch controllerby cotter pins 30, the adustment to securevarying degrees of friction being secured by varying the strength of these springs in any desired way as by changing'their curvature or their resiliency.

At the rearward end the latch controller 25 is provided'with a cam. shaped opening 31 to receive the stud 24 of the latch. When the latch controller is in its'rearward position as shown in Fig. 1 the wall 32 of this opening passes behind the stud which is then in its lowermost posit1on. If now the latch controller be moved forwardly'the wall 32 cams'the projection 24: upwardly releasing the latch from engagement with the stud 19 and allowing the thread cutting mechanism to assume its actuating position. As the latch controller continues its forward movement the wall 33 of the opening 31 passes beneath the projection 24 and the latch is thus maintained in its elevated position. This forward movement of the latch controller is secured in any suitable manner from the usual loom changing mechanism which is actuated when filling replenishment is called for As is well known such mechanism commonly includes what is generally known as the controller rock shaft'34 -eX- tending forward of and parallel withthe breast beam and which is rocked upon the call for filling replenishment. As a convenient means for operating the latch controller lthisxcontroller rock shaft 34: is provided with an arm 35 extending upwardly and behind a lug 36 laterally projecting from the latch controller.

The operation ofthe mechanism will now be apparent. Under normal running conditions of the loom thepartsare positioned as shown'in Fig. 1, the latch 20 beingin its lowermost position engaging the stud '19 and maintaining the temple threadcutter out of actuating position. Upon the call for filling replenishment the controller rock shaft 34; is operatedrockingtheupper end of the arm 35 forwardly. This arm contacting with the projection 36 slides the latch controller 25 forwardly and the wall 32 acting against the projection 24 cams the latch upwardly releasing it from the stud 19. The blade 7 at once under the action of the spring 12 moves rearwardly and its rearward end swings upwardly bringing the cutting mechanism into actuating position. At the same time the wall 3?) slides beneath the projection 24: and retains the latch elevated against the action of its spring 22. The parts are now in the position shown in Fig. 2. As the lay beats up it strikes the heel 16 operating the temple thread cutter in the usual manner and then strikes the heel 17 of the temple carrying the temple back in the temple stand 1 in the usual manner. In the meantime the arm 35 has swung rearwardly to its normal position. The latch controller 25 is so mounted that normally it would slide rearwardly into the position shown in Fig. 1 under the influence of gravity but this movement is retarded by the adjustable frictional means already described. But the shock and jar of the operation of the loom and in particular the shock and jar caused by the lay striking the heel 17 of the temple and the frictional engagement of the projection 2st of the wall 23 all serve to secure the gradual but retarded movement of the latch controller 25 rearwardly. The frictional means such as the springs 29 are so adjusted as to prevent the completion of this rearward movement of the latch controller until several beat ups haie taken place and the temple thread cutter has accordingly been actuated several times. hen, however, the latch controller has moved to its rearward position the projection 2% slides ofi" the wall 38 down the wall 32 and the latch 20 under the influence of its spring falls into its lowermost position. Upon the next beat up the lay striking the heel 16 carries the blade 7 forwardly bringing its stud 19 again in front of the latch '20, and the temple thread cutter is again locked out of actuating position and the parts resume their normal position as shown in Fig. 1.

It will be seen that the construction thus presented is simple and strong and so constructed that the parts are not liable to get out of order or be injured under the trying conditions to which they are subject in the operation of the loom.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. An automatic weft replenishing loom comprising a temple thread cutter actuated by or through the movement of the lay, a latch normally in engagement with the cutter to maintain it out of actuating position, a latch controller mounted to move by gravity into position to allow the latch to hold the cutter out of actuating position, means controlled by orthrough the loom changing mechanism to move the latch controller in the opposite direction to release the latch and place the cutter in actuating position, and means for frictionally retarding the gravity movement of the latch controller whereby the latch controller is gradually re: turned to normal position by the shock and jar of the loom operation to permit the cutter to remain in actuating position until after a plurality of successive cutting operations have taken place.

2. An automatic weft replenishing loom comprising a temple thread cutter actuated by or through the movement of the lay, a latch normally in engagement with the cutter to maintain it out of actuating position, a latch controller mounted to move by gravity into position to allow the latch to hold the cutter out of actuating position, means controlled by or through the loom changing mechanism to move the latch controller in the opposite direction to release the latch and place the cutter in actuating position, and adjustable means for frictionally retarding the gravity movement of the latch controller whereby the latch controller is gradually returned to normal position by the shock and jar of the loom operation to permit the cutter to remain in actuating po sition until after a plurality of successive cutting operations have taken place.

3. An automatic weft replenishing loom comprising a temple stand, a temple slidably mounted in the stand, a temple thread cutter carried by the temple and actuated by or through the movement of the lay, a latch movably mounted on the temple and normally in engagement with the cutter to maintain it out of actuating position, a latch controller mounted to slide rearwardly and. downwardly on the temple stand under the influence of gravity into a position to allow the latch to hold the cutter out of actuating position, means controlled by or through the loom changing mechanism to move the latch controller in the opposite direction to release the latch and place the cutter in operating position, means engaging the latch controller frictionally with the temple stand to retard the gravity movement of the latch controller whereby the latch controller is gradually returned to normal position by the shock and jar of the loom operation to permit the cutter to remain in actuating position until after a plurality of successive cutting operations have taken place.

4L. An automatic Weft replenishing loom comprising a temple stand, a temple slidably mounted in the stand, a temple thread cutter carried by the temple and actuated by or through the movement of the lay, a latch movably mounted on the temple and normally in engagement with the cutter to maintain it out of actuating position, a latch controller mounted to slide rearwardly and downwardly onthe temple stand under the influence of gravity into a position to allow the latch to hold the cutter out of actuating position, means controlled by or through the loom changing mechanism to move the latch controller in the opposite direction to release the latch and place the cutter in operating position, resilient means secured to the temple stand and pressing the latch controller into frictional engagement therewith to retard the gravity movement of the latch controller, whereby the latch controller is gradually returned to normal position by the shock and jar of the loom operation to permit the cutter to remain in actuating position until after a plurality of successive cutting operations have taken place.

5. An automatic weft replenishing loom comprising a temple thread cutter actuated by or through movement of the lay, means controlled by or through the changing mechanism of the loom to place the cutter in actuating position, means, including a movable frictionally retarded element, controlled by the jar and shock of the loom operation, to throw the cutter out of and lock it out of actuating position after a plurality of successive operations have taken place.

6. An automatic weft replenishing loom comprising a temple thread cutter actuated by or through movement of the lay having a latch normally in engagement with the cutter to maintain it out of actuating position, a movable frictionally retarded latch controller, means controlled by or through the loom changing mechanism to move said latch controller in one direction and therethr'ough to release said latch and allow the cutter to move into actuating position, said latch controller being gradually returned to normal position by shock and jar of the loom operation to permit the reenga-gement of the latch and cutter to lock the cutter out of actuating position after a plurality of sue;

cessive cutting operations have taken place.

projection and pivotally mounted on the temple and normally swung down into engagement with the cutter to maintain it out of actuating position, a latch controller provided with a cam wall cooperating with the latch projection and mounted to slide rearwardly and downwardly on the temple stand under the influence of gravity, the said latch controller when in its rearward position having its cam wall in the rear of the latch projection to allow the normal engagement of the latch with the cutter, means controlled by or through the loom changing mechanism to move the latch controller forwardly and thereby to cause its cam Wall acting on the latch projection to elevate the latch and place the cutter in operating position, and then pass beneath the projection to lock the latch in elevated position, means for pressing the latch controller into frictional engagement with the temple stand to retard the gravity movement of the latch controller whereby the latch controller is gradually returned to normal position by the shock and jar of the loom operation to permit the latch projection to ride down the cam wall and return to normal position locking the cutter out of actuating position after a plurality of successive cutting operations have taken place.

In testimony whereof, I have signed my name to this specification.

EDWARD S. STIMPSON.

Uopies 01' this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

